The list view (e.g. Delivery Status) allows you to sum numeric fields so you can get a value per grouping. However as far as I can tell I cannot group by Project Start / Project Target.

The Timeline (e.g. Product Timeline) and Board (e.g. Product Roadmap) views allow you to see the Project Start / Target or Roadmap columns, however you do not appear to be able to show sums of numeric field per grouping / cell. It only counts number of ideas
(Mockups of what I am looking for...)


The only workaround I can see for now is to use a multi-select field for each quarter, then use a list view, but having this sum on the board / timeline view would be preferable to support our team transitioning from Productboard.
Are there any other options or approaches available?